Hydraulic controlled drag broom



Oct. 27, 1942. 'J. B. ALLEN- HYDRAULI G CONTROLLED DRAG BROOM Filed Nov.5,1941 5 Sheets-Sheet 1 Oct. 27; 1942. J. B. ALLEN 2,300,192

HYDRAULIC CONTROLLED DRAG BROOM Filed Nov. 5, 1941 s Sheets-Shed 2 23 -3In ventor 2. v UPI/245534115,

A [ta/Hey Oct. 27, 1942. J. B. AL LEN v HYDRAULIC CONTROLLED DRAG BROOMFiled Nov. 5, 1941 3 Sheets-Sheet s Attorney A 7 3 I 6 m h I 3 M 2 a 2 If 8 l. V 3 w/ x s m f w 3 a WW Patented Oct. 27, 1942 UNETED STAT PTENTOFFICE HYDRAULIC CONTROLLED DRAG BROOM James Bradley Allen, Winchester,Ky., assignor to Allen-Codell Company, Winchester, Ky.

1 Claim.

This invention relates to new and useful improvements in apparatus forthe construction of roads and highways, and more particularly to animproved drag broom and hydraulic ram for operating the same.

The principal object of the present invention is to provide a hydraulicram which can be used for controlling drag brooms such as are used insweeping in choke material on water bound macadam roads and leveling offhighways and the like preparatory to the operation of rolling the samesmooth.

Another important object of the invention is to provide a hydraulicallycontrolled drag broom adapted to be mounted on a roadway roller andwherein operating means is provided permitting quick raising or loweringof the broom as the need requires.

Other objects and advantages of the invention will become apparent tothe reader of the following description.

In the drawings:

Figure 1 is a fragmentary side elevational view showing thehydraulically controlled broom attached to a roller.

Figure 2 is a rear elevational view of a roadway roller with the broomappliance attached.

Figure 3 is a vertical sectional view taken substantially on line 33 ofFigure 2.

Figure 4 is a horizontal sectional View taken substantially on line 4-4of Figure 1.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that numeral 5 generally refers to a conventional roadwayroller having back corner posts 6 for supporting the roof I of a driverscab. Numeral l denotes the lower side walls of the cab.

The present invention is generally referred to by numeral 8 and is madeup broadly of a hydraulic ram generally referred to by A and a broomassembly generally referred to by letter B.

The ram A consists of an elongated cylinder 9 threaded into a head Illat its upper end, this head having a projection ll through which a pinI2 is disposed, this pin 12 being journaled through ears l3 projectingrearwardly from a channeled bar l4 bridging the rear corner posts 6, 6.(See Fig. 2.)

The lower end of the cylinder 9 is threadedly I 15. The end of the rodIT in the cylinder 9 is 55 provided with a piston l9, while the lowerend of the rod ll passes downwardly through an opening in theintermediate portion of a channeled member 20. Frame members 2|, 2|extend from the ends. of this channeled member 20 and connect to the endportions of an elongated plate 22 which is disposed along the top sideof a brushback 23. It may be found desirable to place angle members 24,24 along the upper edges of the brushback 23, as in the manner shown inFigure 3.

Cross straps 25 pass under the brushback 23 and tie bolts 26 connect theends of the cross straps 25 with crossstraps 21 passing over theelongated plate 22. Thus, the plate 22 and brushback 23 from which thebristles 28 depend are firmly clamped together. Struts 29 are providedbetween the frame members 2| and the plate 22 and brace members 30 arealso provided between the frame members 2| and the plate 22, and tothese brace members 30 connect the rear ends of arms 3| which arepivotally connected, as at 32, to the side walls 7 of the drivers cab.

Reverting now to the piston rod l1, it can be seen that the same passesdownwardly through an opening in the channeled member 30 and has acotter key 33 at the lower end thereof to prevent displacement of therod from the channeled member.

On the piston rod I1 is a fixed collar 34 between which and thechanneled member 20 is a compression spring 35.

Suitably mounted on the roller 5 is an oil pump 33 from which a supplypipe 31 extends to a control valve 38. From this control valve 38extends two pipe lines 39 and 40, one connecting to a hose 4! which isconnected by a fitting 42 and communicates with the upper end of thecylinder 9, while the other pipe connects to a hose 43 which in turn isconnected by a fitting to the head 5 in communication with the lowerportion of the cylinder 9.

It can now be seen that when the control valve 38 is operated by ahandle 44, the pipe line 39 can be placed in communication with thesupply pipe 31 for supplying fluid in the brushes to the upper end ofthe cylinder 5, which of course will exert pressure on the piston I9 toforce the rod l1 downwardly, lowering the broom assembly B and holdingthe same under pressure against the roadway.

When it is desired to raise the broom B, the lever 44 can be moved tothe opposite position, connecting the line 40 with the line 31 and theline 39 with a return line 45 to the pump 36.

Fluid under pressure will now be supplied to the lower end of thecylinder 9 for raising the piston l9 and the broom B, while fluid willreturn from the upper end of the cylinder by way of the line 39 to thereturn line 45 and the pump 35.

While the foregoing specification sets forth the invention in specificterms, it is to be understood. that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is:

The combination with a road roller having a back cab structure, of a barextending across the 15V back structure, a fluid pressure ram comprisinga cylinder depending from said bar and having an upper end pivotedthereto, a piston rod extending out of the lower end of said cylinder,an elongated brush including a back extending crosswise of said rollerin the rear thereof, an upwardly arching frame on top of said back andhaving ends connected to said back adjacent opposite ends of the latter,a yielding connection between said piston rod and the center of saidframe, and means to introduce fluid under pressure into opposite ends ofthe cylinder selectively.

JAMES B. ALLEN.

